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Planet 9 in our solar system? Scientists discover potential planet 5-7 times Earth's size, orbiting Sun every 20,000 years
The solar system may hold a hidden surprise. Astronomers are investigating the possibility of a mysterious ninth planet, often referred to as Planet Nine. If found, this discovery could change the ...
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$1.9 Billion Telescope Has ‘Excellent Chance’ Of Finding Planet X — If It Exists
Is there an unseen planet — a "planet X" or "Planet Nine" — in the outer solar system? That possibility ... Rubin Observatory," said Siraj. The $1.9 billion Vera C. Rubin Observatory’s ...